Scale



Dec. 27 I927.

Re. 16,840 M. H. STARR S GALE Original. Filed Jan. 20, 1920 INVENTOR Y Mrton Starr W\ Q ATTORNEY BSheets-Sheet l M. H. STARR S GALE 8 Sheets-Sheet 2 Original File i Jan. 20. 1920 ATTORNEY m 9 l 7 2 Q e D Re. 1 ,840 a M. H. STARR SCALE Original Filed Jan. 20. 1920 8 sheets sheet V INVENT OR Marion )7. Starr,

g; -B\ c W ATTORNEY Dec. 27 1927 M. H. STARR' SCALE Original Filed Jan. 20, 1920 8 Sheets-Sheet v v iNVEf-QTOR filav'ton f1 Starr Dec. 27-. 1927. Re 16.840

- M. H. STARR SCALE Original Filed Jan. 20. 192 s Sheets-Sheet 5 fjj1f 15' III 1 2 1:5

as 1 84' 11101101: H Starr INVENTOR Dec. 27 1927.

R 16,840 M. H. STARR S CALE Original Filed Jan. 20. 192 8 Sheets-Sheet e Mrion 1 ATTORNEY Dec. 27 1927.

M; H. STARR SCALE Original Filed Jan. 20, 1920 8 Sheets-Sheet E 44444 i4 52 74 76? 79 52 53k m 53 54 '54 55 51 56 9 56 6'6 i I 4 v 71 '65.

M( rton INVENTOR H tarr Dec. 27 i924? M. H. STARR SCALE Original Filed Jan. 20. 8 Sheets-Sheet B INVENTOR v lllorton H StCZTT} ATTORNEY Reiacued Dec. 27, 1927.

UNITED STATES I Re.'l6 ,84ll PATENT OFFICE.

HORTON H. STARR, OF ST. JOHNS BURY, VERMONT. ASSIGNOB TO B. i T. ranmma AND COIPANY, 01' ST. IOHNFBUBY, VERMONT, A CORPORATION 01' WONT.

SCALE.

Original No. 1,385,592, dated July 28, 1921, Serial No. 852,817, filed January 50, 1030. Application to:

' retuue Med Kay 8, 1926. Serial Ho. 107,888.

This invention relates to scales, and more particularly to high capacity scales which are adapted for installation with railway tracks to weigh cars and other heavy loads.

It is an object .ofjtbe invention to provide an improved scale of the character mentioned which is relatively simple in construction and reliable anll exact in function under all conditions of service.

It is another object to provide an improved trade scale embodying a system of levers for transmitting load stresses, and in which torsional strains in the levers are avoided by means of improved connections therebetween.

Another object is to provide an improved scale employin a series of load transmitting levers, anc means for supporting said levers and 'assuringthe maintenance thereof in accurate operative alinement under all conditions.

Another object is to provide an improved scale wherein dimensional changes of e'xpan sion and contraction due to temperature variations are ineffective to disturb thd weighing precision of the apparatus.

It is also an object to provide an improved heavy duty scale wherein the several levers and their connecting means are of increased strength and, durability, and wherein the assembly thereof is facilitated.

A still further object is to provide an formed with an opening disposed along the longitudinal center line of such levers, with spaced apart alined pivots carried by the levers in said opening but on each side of the levers whereby there is provided an unrestricted vertically disposed well in the body of the levers. which well is adapted to have inserted therein suitable load transmitting means that are supported by the spaced apart pivots in such a manner as to be mova le in a plurality of planes.

A further object is to provide a scale of the character referred to wherein certain of the parts in combination and in sub-combination are structurally,-superior and funclionally advantageous.

Other objects and advantages will be in paid. apparent from and in part noted hereinafter in connection with the following descale having its main levers 'scription of an exemplary but preferred embodiment of the invention shown in the accompanying drawings, in which 1 Figure 1 is a schematic view of the system of levers employed;

Fig. 2 is a vertical transverse section a portion of the load transmitting means being shown mounted therein;

Fig. 5 is a side view of the structure shown in Fig. 4, one of the girder chairs that are carried by the load transmitting means being shown mounted in the lever;

Fig. 6 is a transverse sectiontaken approximately on the line 6-6 of Fig. 4;

Fig. 7 is a longitudinal section taken approximately on the line 7+7 of Fig. 6;

Fig. 8 is a detail perspective view of the.

suspension bolt used in connection with the main levers shown in Figs. 4 to 7'; i

Fig. 9 is a plan of one of the center extension levers;

Fig. 10 is a similarview'o f one of the end extension levers;

Fig. 11 is a transversesection taken approximately on-the line 1111 of Figs. 9 and 13 and showing part of the connections between a pairof main levers and one-of the center extension levers;

Fig. 12 is a transverse section taken approximately on the line 12-12'of Figs 9 and 13 andshowing the ivotal mounting between a center extension I ever and its supporting stand;

Fig. 13 is a longitudinal section of a center extension lever of Fig. 9; i

Fig. 14 is. a detail section of the; connec I 1414 of Fig. 3;

Fig. 15 is an elevation 0t one of. the bearin blocks shown in Fig. .14; i

ig. 16 a fragmentary vertical longitaken "on the line 18. -13

ncl

tudinal section showing the pivotal connection between a center extension lever and an end extension lever;

Fig. 7 is a vertical transverse section taken the line 1717 of Fig. 16;

18 is a fragmentary side elevation of the adjacent ends of the center and end extension levers, certain parts being shown in section, as seen from the line 18-18 of Fig. 17;

' ig. 19 is a fragmentary elevation of the connection between the adjacent ends of the two center extension levers and the fifth lever, certain parts being shown in section to more clearly disclose the details of construction;

Fig. is a detail elevation of a portion of Flg. 19 taken at right angles;

Fig. 21 is a perspective view of the parts used in the connection of the center extension levers with the fifth lever; and

Fig. 22 is a vertical transverse section of the free end of the fifth lever showing the means employed to transmit the load stresses from the lever mechanism to the weight indicating mechanism.

Referring more particularly to the illustrated embodiment of the invention and the general layout of Fig.1, four spaced pairs of main levers (designated A A". B B. C C and D D) are employed to receive the superposed load and transmit the same pro- Eortionally to extension levers (designated E and F F) which in turn transmit a tpredetermined reduction fot the load to a fth lever G adapted forvconnection with a suitable weight indicatin mechanism. Each main lever is connecte 'to its comparison member and to the superposed extension lever by means constrficted and associated to transmit the pull incident to the load being weighed in a line substantially coinciding with the intersection of the center planes 'throu h the thus connected main and extension evers. In order to ermit this construetion, each lever, as wil hereinafter be more fully described, isformed with spaced side walls through which. the load transmitting means extends.

The several pairs of main and extension levers are adapted to be arran ed in a pit 1 (Fig. 2) beneath a track 2. arallel longiv.

. tudinal girders 3 which are suitably connect ed to form a skeleton platform, overlie the main levers, and these girders carry stands 4 to sup ort the track rails. The girders us so isposed as to transmit the load to the main scale levers through 'oonnections shown in Figs. 2, 4, 5, 6 and 7,

and to be described.

The. train of extension levers, as referred to, comprising the end extension. levers E E, and the center extension levers F F, are mounted longitudinally the scale pit,

"between the girders 3, the levers E and E having their rear ends pivotallv supported, such as by means of a stand 5 (Fig. 3) while the levers F F are pivotally supported midway their length, such as by means of a stand 6 (Fig. 13). The free end of each end extension lever is connected to the adjacent end of a center extension lever, and theadjaccntends of the center extension levers are connected together and to the fifth lever (i hv improved cmmecting means which will be hereinafter more fully described. such means being designed to transmit the load stresses in the vertical center planes of movement of the respective levers so as to avoid torsional and binding strains.

shown more particularly in Figs. 4, 5, 6 and 7, each main lever comprises spaced 'side walls 7 which are integrally connected to provide a rear or butt end 8, and a front. or tip end 9, such walls being also connected by one or more intermediate vertically disposed webs 10.

Mounted in the butt 8 of each main lever is a depending knife edge'pivot 11 ada ted .to seat- 'in a concavcd bearing 12 carrier. by the upper end ofa stand 13. Likewise, the tip 9 of each main lever is provided with 9. depending knife edge pivotlet, that is adapted to co-operate with suitable means, to be described, whereby load stresses will be transmitted from the main levers to the end v extension levers.

In order that each main lever can withstand excessively heavy load stresse the butt 8 is made considerably wider than the tip 9, and the pivots 11 and 14 have a length substantially corresponding to the width of the portion of the lever in which they are mounted. The side walls 7 are formed parallel with each other adjacent the butt end of the lever, and in the forward part of such lever these walls merge towards the narrower tip so that the lever. in plan, hasan appearance approximately similar to the letter A (see Fig. 4). On the other hand, by referring to Figs. 2 and 5'. it will'be noticed that each side wall 7 is. in side elevation somewhat triangular in outline with the deepest part extending downwardly. The lever is. constructed with this design so as to provide the portion of the lever immeshown in Figs. 6 and 7, such side walls-are constructed with a relatively I thin vertical web around the edge of which is a fiang eihe The flange merges with the butt at one end and alao'with the tip at the other end, and the construction is such that aunitary structure is formed,which structure is reinforced to rovide a-member of great strength.

the resent instance the side walls of the main evers, adjacent the butt 8 thereof, are formed with rectangular alined openings 16, which openings are disposed in the webs of the side walls immediately below the to flange 15. Eachof the openings 16, as wil be seen from Fig. 6, have a transversely disposed boss 17 formedin'their lower edge, which boss is connected to the lower flange of the lever walls by reinforcing ribs 18. The bosses 17 have a channel 19 formed longitudinally in their upper faces for the reception of a. knife edge pivot 20 which is ti htly fixed therein.

Ihe disposition of the bosses andthe pivots carried thereby is such that there is formed a scale lever having 8 aced side walls, in which walls are mounte spaced apart alined knife edge pivots that are located on each side of the longitudinal center line of the lever. By this construction the usual conf tinuous load pivot hasj been discarded, and

in its place there is a pair of alined pivots which, althou h each are of shorter length than the let! t i usually required for a single load pivot, ave a combined length greater than is usually required. Furthermore, it will be observed that by mounting the spaced alined pivots 20 so that they do not intersect the longitudinal centerv line of the lever, I have provided a vertical passageway that is centrally disposed in the lever. With this construction of a lever, I am enabled to employ mans for transmitting the load stresses through the lever, which means can be so mounted in the lever whereby the load stresses can be transmitted through the lever at the point of intersection of the transverse line provided by the pivots 20 with the longitudinal center line of the lever.

Load stresses are transmitted from the scale platform to the respective main levers through chalrs 21 ,\\'lllt'll are mounted in the levers and which support the girders 3.

havingspaced depending legs posed in the vertical passage-way between the spaced side walls 7 of the 'lerer so as o straddle the pivots 20 and other associated parts to be described. ,The extremities of p the legs 22 are provided withconcave recesses 23 arranged to contact with trunnions '24 on an ad'ust-able trunnion block 25mm is posithin in each main lever beneath the pivots 20ill8100t.

The trunnion'block has a central ve 'ticnl o n ng 26 through which extends a sugpension bolt 27. The bolt is provided with laterally projecting lugs 28 at its upper end to provide a T-shaped head arranged to blocks 34.

' of adj ustably extend into openings 29 in the spaced side walls 30 of a saddle member 31. The lower surface of each of the lugs 28 of the suspension bolt. is fori'ucd-so as to provide a defined edge functioning as a pivot for seating in coucaved bearing surfaces 33 formed in the side walls 30 of the saddle.

It will be noticed that the depending legs of the girder chair, as well as the trunnion 24 of the block 25 and the T-shaped head of the suspension bolt 27 are all arranged in the lever along the longitudinal center line thereof and at right angles to the knife edge pivots 20, while the saddle mcmber, which is of rectangular skeleton form, is arranged transversely of the longitudinal center of the lever to that its ends overlie the pivots 20.

pivots 20 are mounted in the openings 16 in the sidewalls 7, as shown moreclearly in Figs. 4, 5 and 6, and the ends of, th e saddle 31, which also extend through the openings in the sidewalls 7, are adapted to'seat in recesses 36 inathe uppen faces of the bearing The arrangement of the parts is such that i there is ample clearance between the pivots 20 for the'bolt 27 which is centrally disposed in the opening in' the lever. is boxed in the registering openings between the side walls of the lever and ofthe saddle and centrally of the bearing seats thereof, the

Thus the bolt .7

vertical longitudinal center lin offltl eabolt being positioned coincident withitheintersection of the longitudinal center line ofst-h'e lever with the transverse pivot line thereof.

The bolt is threaded'on its lower end and a nut 35 is screwed thereon for the purpose I ositioning the. trunnion block :25 to govern t. 1e relative vertical disposit on of the girder chair 21 with respect to the corresponding main lever. This adjusting nut may also be provided on its upper surface with a plurality-of radial'recesses 36,and

the trunnion block 25 may have a pair of complementary projections 37 adapted to engage in a pair of said depressions to lock the members against relative rotation. 1 Each girder cha r is compo-ed of a casting that are disadhere is thus formed a pivotal suppdrl between the girder chair and the main, hirer win-rein the pivotal axis extends longitn'di nally and centrally of the main lever between the side walls 7 and whereby slight. movement of the girder chair transversely of the lever is permitted.

The construction described provides in effect a universal joint between the girder chair and main lever. Atthe Same time the disposition ofthe pivotal bearing joints is such that the load is tran mitted Substantially linearly at the intersection of the con-- ter planes of the girder and the main lever, Furthermore the construction described is of especial in that the castings aad parts are capable of ready manufacture and expeditious assembly; that is to say, the bearing blocks 34 ma be readily placed on the pivots 20, the sa dle 31 then ositioned and the suspension bolt 27 insta led from above with its top projections 28 turned to pass between the side walls of the saddle until the projections are opposite the saddle wall openings whereupon t 0 suspension bolt is turned to position the projections 28 in the side wall openings of the saddle whereby the pivots 32 of the bolt can be seated in the bearings 33 of the saddle. The trunnion block 25 and nut 35 are then positioned ugm the depending end of the'suspension l-t from below. The girder chair 21 straddles the saddle 31 and the suspension bolt and may be thus readily positioned.

The connections for transmitting the loadstresses from the several pairs of main levers to the corresponding extension levers are similar in each instance, and Figs. .11, 13 and 14 shows details of the typical connection between one pair of main levers and one of the extension levers. As here shown, the free ends of the main levers overlap in the plane of and below the extension lever, one .ing disposed above the other and spaced therefrom, and each having its pivot 14 seated on a concavcd bearing 38 suitably Secured, in-

a groove 39 in the upper surface of a bearing block 40. Each bearing block 40 has apertures 41 through the end portions thereof through which extend the lower threaded ends of spaced bolts 42. Nuts 43 screw on the bolts and are arranged to engage the under surfaces of the bearing block 40 and to support the latter in adjusted position to receive the load.

The free ends of the main levers thus exlend between the supporting bolts 42 and are arranged to transmit the load stress through the pivots 14 to the respective bearing blocks adjustment of the parts an 40 and thence through the bolts 42 to the corres ondin extension levers. I

he be ts 42 are headed at their upper ends and ass though apertures 44 1n an upper bearing block 45 disposed between the 0 s of the'extension lever and extending into side openings 46 in said webs. This bearing block 45 has a concaved seat 47 -mounted in the under surface thereof and arranged to receive a knife edge pivot 48 which is suitably secured in a groove 49 in a transverse integral web 50 between the side walls of the extension lever. p

The connection described rovides ready .permits easy replacement when desired and also provides ad stresses in for the transmission ofthe lo the center that is to say, substantially linearly in the intersection of the center planes of (pivotal movement of the main and extension lev 's.

.Fromeach of the end extension levers planes of movements of the levers,

vertical center planes of movement of the levers, so as to prevent unequal wear of the bearings and to avoid torsional and binding strains in the levers themselves. By this construction the accuracy of the scale is enhanced and its effective life prolonged. The details of these connections are the same and are shown particularly in Figs. 16, 17 and 18. As there illustrated, each comprises an adjustable nose iron 51, preferably cast metal, which is secured to the end extension lcver E as by bolts 52 passing through openings 53 in flanges 54 of the lever and through openings 55 in laterally extending flanges 56 of the nose iron. The extension lever is also fitted with a longitudinally extending groove 57 in which project-ions 58 of the nose iron are slidably mounted. A projection 58 on the nose iron is apertured and internally-threaded to receive the threaded end of an adjusting bolt 59 which also passes through an o ening 60 in the casting 61. secured to the tip of the lever E as by suitable screws 62, andis fitted with a lock nut 63. An adjustable nose iron 64 somewhat similar to casting- 51 is also mounted on the upper'surface of the end of center extension lever adjustable" inthe groove 6'5. Anadjusting bolt 66 passes" through an aperture 67 in: casting 68 and is threaded at its end to engage; a threaded recess 69 in the nose iron 64. This bolt is also.fitted with a lock nut 70 to hold the nose iron in adjusted position. The casting 68 may be secured to the tip end of the center extension lever F by suitable bolts 71.

- On each side of the longitudinal center line ofcasting 51 a short knife edge pivot 72 is secured transversely of the lever and a similar knife edge pivot73 is secured centrally of the nose iron 64. Extending transversely of the extension levers is an inverted U-shaped connection or hearing yoke 74 having laterally projecting lugs 7 5 at the outervextremity of the arms thereof, andthe upper surfaces of these lugs are channeled to receive bearing-spools 76,

preferably of hardenedstccl and circular 77 rests on and is en- F to be longitudinallygaged bythe pivots 72 cooperating totranswit the load fromfthe end extension levers to the center-extension levers. The throat of the U-shaped yoke 74 is channel toreceive a bearingspool 78 0a which rests a bearing seat 79 disposed above mentioned. The described allows free relative pivotal movement of the extension levers and constitutes a strong and stable connection therebetween.

to..rece'ive pivot 73 pivotal connection of-one center extension lever overla "of the other in a vertical plane an sion levers.

ppsed outside of tension levers It will thus be evident that the connection described transmits the load stress from the end extension levers to thecenter extension levers in the plane of movement of said levers, that adjustment in length of the relative lever arms for sealingthe scale is facilitated and that the various parts .are ca able of ready assembly or removability w 1en desired.

The end extension levers E E which carry pivots of substantial length, are supported at their outer ends on concave bearings 81 mounted in the top of the stands 5. The stand 6 for the center extension levers F F has a central web having recesses 82 in its upper edge and into whic l recesses extend the side w bs of the center extension lever (see Figs. 12 and Suitably secured to the upper surface of the stand 6, as by bolts 83, is a transverse bloc 84 extending through openings 8.5 in the side walls of-the extension lever and supported by and secured to which is a concave earing 86 to receive a knife edge pivot 87 in turn mounted in a groove 88 in the under surface of a transverse web 89 between and integral with the side walls of the extension lever. The load on the center extension lever from the end extension lever is thus carried by the knife edge pivotal connection to the stand 6. r

The connections between the ends of the ex- F F and the end of the transverse lever G are shown particular-l in Figs. 19, 20 and 21. As there illustrate the end s the end the overla ping ends are connected to the end therebe ow of the transverse lever which may be arranged at any desired angle to the exten- Longitudinally adjustable nose irons 90 similar in general to the nose iron 51 above described, are mounted on the upr rsurfaces of-the ends of levers F F, reep'ectively, whereby knife edge pivots 91 and 92' carried thereby may be ad'usted and lockedsfin vertical alinement an the scale correctly sealed. The knife edge pivots 91, 92 seatagainst concaved bearings 93 and 94 mounted in grooves 95 and 96 in the under surfaces'of transverse bearing blocks 97 and 98,resp'ectivel These bearing blocks are apertured at t eir ends to receive airs of tension bolts 99 and 100, respective y. The bearin block 97 is longer than the bearing block 8 (Fig. Q1) so t at bolts 99 are disthe bolts 100 and bearing ock 98. The lower ends of the two pairs of tension bolts are threaded and extended through vertically alined'end o enings 101 in a complementary transverse y disposed yoke 102. A plurality of nuts 103 are threaded on the lower ends of the bolts 99 and 100 whereby the yoke 102 may be "ositioned to receive equally the load.

-edge pivot 111 to bear on the construction orcea derstood that certain features of the inventransmitted through the center extension levers F F. The yoke 102 is also centrally apertured to receive the upper end of a headed tension bolt 104, the lower end of which passes through a central opening 105 in a bearing block 106 disposed beneath the inner end of the transverse lever This bearing block is fitted with spaced concave bearings 107 at opposite sides of the aperture 105 to receive the knife edge pivots 108 suitably mounted in grooves 109 in the under surface of the inner 'end of .the transverse lever Gr, which is also apertured centrall toprovide clearance therethrough for the olt 104.

By the construction described it will thus be seen that the load stresses are here also 3). transmitted in the planes of said levers, and

substantially in a line coincident with the intersection of the center planes of movenicnti of the extension levers and the fifth lever, respectively. Consequentlyl torsional strains and unequal wear of t e bearing parts are avoided.

Suitable connecting means between the outer free end of the transverse lever with the weight indicating mechanism are provided. As shown in Fig. 22, this connection includes a nose iron 110 adjustably mounted on the lower surface of the trans-. verse lever and carrying a transverse knife the concaved bearing 112, in turn supported b Y a transverse bearing block 113. The bloc 113 is apertured at its ends to receive the lower ends of a V-shaped bolt or clevis 114 through which the load stresses are in turn transmitted to the weight indicating mechanism of the scales.

It will be understood that the various knife edge pivots and the concave bear ing seats therefor as employed through the lever system are of hardened steel or other suitable wear resistant material. It will be observed further that the knife edge bearings described are of graduated dimension, decreasing in length as the quantitative load force transmitted thereto decreases, but that in each instance-the connection between levers is such as to provide adequate dimension of the pivotal bearing parts.

The sealing'of the scale, as a whole, can be expeditiously effected by reason of the various adjustable connections whereby the respective lengths of the connecting lever arms are variable. The webbed construction of thelevers, while of advantage in strength and durability, is of especial further superiority in combination with ,the' improved connecting means between the levers as described.

The functional and structural objects above stated are thus seen to be obtained in described. It is to be unppposed bearings at the having spaced tion are capable of modification and combination in scales of other types without sacrifice of the attendant advantages.

As many changes could be maderin the above construction and many apparently widely different embodiments of this invention could be made without departing from the scope thereof, it is intended that all matter contained in the above description or shown in the accompanying drawing shall be interpreted as illustrative and not in a limiting sense.

It is also to be understood that the language used in the following claims is intendto cover all of the generic and specific features of the invention herein described, and all statements of the scope of the invention which, as a matter of language, might be said to fall therebetween.

Having described my invention, what I claim as new and desire to secure by Letters Patent is 1. In a scale, in combination, a lever having spaced alined pivots and an opening centered therebetween, and a load transmitting member disposed through said opening and having an operative connection member with said spaced pivots whereby said member is pivotally movable in a plurality of planes.

2. In a scale, in combination, a lever having spaoed alined pivots and an opening centered therebetween, a rigid member having a pair of bearings cooperating with said pivots and having a centered opening registering with said first sides of said opening atsubstantially right angles to said pair of bearings, and a load transmitting member disposed through said openings and having alined pivots to cooperate with said opposed bearin V In a sea e, in combination, a rigid lever alined pivots and an opening centered therebetween; a load transmittin member disposed through said opening an having an operative connection with said s aced pivots whereby said member is pivota ly movable in a plurality of planes, and a loading member having legs to straddle said first member and pivotally connected thereto below of said first member to said lever.

4. In a scale, in combination, a lever having spaced alined pivots andan opening centered therebetween, a rigid member having bearings cooperating with said pivots and having a center opening registering with said first opening and having opposed bearin s at the sides of said center 0 ening at su stantially right angles to said pair of bearings, a load transmitting member disposed through said openings and having pivots to cooperate with said opposed bearings, and a loading member having legs to opening and having the plane of connection straddle said. first member and ivotally connected thereto'below the plane 0 connec tion 01 said first member to said lever.

5. In a scale, in combination. a rigid lever having spaced alined pivots and an o ening centered therebetween, a rigid saddle iaving a pairof bearings cooperating with said pivots in one horizontal'plane and having a center opening registering with said first opening and having opposed bearings at the sides of said center opening at substantially right angles to said pair of bearings, and a load transmitting member disposed through said openings and having pivots to cooperate with said opposed hearings in a horizontal plane below said first mentioned plane. y s

6. In a scale. in combinatiom'a rigid lever having spaced alined pivots and an opening therelq etween, a rigid saddle having a pair of bearings cooperating with said pivots in one horizontal plane and having an opening registering with said first opening and having opposed bearings at the sides of its said opening atsubstantially right angles to said pair of bearings, a load transmitting member disposed through said openings and having pivots to cooperate with said opposed bearings in a horizontal plane adjacent said first mentioned plane. and a loading member having legs to straddle said ly connected to said load transmitting member in a plane below both of said first men tioned planes.

7. In a scale, in combination. a rigid lever having spaced alined-pivots and an opening therebetween. a load member having spaced legs disposed through said opening, a load transmitting member dispo-ed through said opening andbetween said legs. cooperating bearings between the lower end of said second member and the legs of said first member to ermit pivotal movement of the latter at riglit angles to the plane of movement of said lever, and an operative connection between the upper end of said second member and the pivots of said lever to permit pivotal in planes parallel and at right angles to the plane of pivotal movement of said lever.

8. In a scille, in combination. a rigid lever having spaced alined pivots andan opening therebetween. a load member having spaced legs disposed through said opening, and connecting means between said lever and said member to transmit the load stresses substantially in a line centrally between saidpivots and said legs.

9. In a scale, in a combination, a rigid lever having spaced alined pivots and an opening therebetween, a load member having spaced legs disposed through said opening and at right angles to the plane of movement of said lever, and connecting means between said lever and said member to transsaddle and pivotalmovement of said second member and said member including a bo t dis osed having spaced alined pivots and an openingunit-the stress substantially ina line centrally between said pivots and said legs. 10. In a scale, in combination, a rigid lever having spaced alined pivots and an opening therebetween, a load member having spaced legs disposed through said opening. and connecting means between said lever and said member including an element disposed centrally between said spaced pivots and said legs.

' 11."In a scale, in combination, a rigid lever having spaced alined pivots and an opening therebetween, a load member having spaced legs disposed through said opening. and connecting means between said lever and said member Including an element disposed centrally between said spaced pivots and said legs and having a pivotal conneciion at its upper end with said lever and a ivotal connection at. its lower end with said between the ends of said saddle and the side 12. In ascale, in combination,- .a, -ri lever having spaced alined pivotsgand, opening therebetween. a load member-having spaced legs disposed through said opening, and connecting means between said lever centrally between said spaced pivots am said legs and having a pivotal connection at its upper end with-said levenand a vertically a justable pivotal connection at lts lower end with said legs. 1

13. In a scale.1n combination, a rigid lever therebetween, a load member having legs dis posed through said opening, a load transmit-- ting element disposed between said legs and through said opening, and pivotal connections etween said element and said legs and between said element and said lever whereby said element may swing relatively to said. load member in one plane and relatively to said lever in a plurality of planes. I

14. In a scale. in combination, a rigid lever having spaced alined pivots and therebetween. a load member having legs disposed through said opening, a load transmitting element disposed between said legs and through said opening, and pivotal connections between said element and said legs and betweeri said element and said lever, whereby said element may swing relativelvto said a lever in the plane of movement of the latter and at right angles thereto.

15. In a scale, in combination, a rigid lever fulcrumed at one end and arranged to transmit the load through its other end and having spaced transversely alined pivots intermediate its ends and an opening between said pivots, and a load transmitting member disposed through said opening and having an operative connection withsaid spaced pivots whereby said member is pivotally movable with respect to said lever in the plane of pivan opening ends, said saddleextending through said openings in said lever side walls and having end hearings to cooperate with saidpivots, and" a load transmitting. member. suspended from said saddle centrally between the side transversely yega rigid saddle;

walls thereof and the side walls of said lever.

17. In a scale, in a combination, a rigid lever having spaced side walls with registering openings therein, a rigid saddle having spaced side walls with registering openings therein, said saddle extendim transversely through said openings of said ever, bearings allsof said lever, a load transmitting mem- 'dis osed vertically and central}? between the" 'si e'walls of said saddle an the side walls of said lever and bearings between said member and the side walls of said saddle.-

18. In a scale, in combination, a rigidlever having spaced si e walls with transversely registering openings therethrough, a rigid saddle having spaced side walls with regis tering openings therethrough. said saddle extending transversely through the openings of said lever, and a load transmitting member extending vertically and centrally b'e-Q tween the side walls of said lever andthe sidewalls of said saddle and having opposed bearing projections extending thnoughthe openings of said saddle. 1

' 19. Ina scale, in combination, a rigid'lever having spaced side walls with registering openings. therethrou'gh, a rigid saddle. haw-- ing spaced side wallswith registered open ings therethrough, said saddle being insertible transversely of said lever through the openings of the latter," and a load transmitting member having opposed extensions. said member being insertible vertically between. said sideawalls of said saddle and being rotatable thereafter-to extend said bearing p i o through Said openings in of said-saddle.

20. 4 In ascale, in combination. a rigid saddle having spaced sidewalls. bearings for the ends of said saddle, a. load transmittin member extending between the side walls 0 said saddle and suspended vertically there-- from, a trunnionsupported at the lower, end of said member, and a loading element ing spaced legs to straddle the side walls of said saddle and to engage with said tnm- 21. In a scale, in combination, a plumlity pivoted main nion.

of spaced parallel pairs of lovers, the leversiof each pair being arranged I upper bearing 9 I lever having-a vpivotal movement at right I connections therebetween to transmit the load ends of of levers and said lever. said angles to the pivotal movement of the corre-,

s nding main l'evel' a plurality of pivoted eiit ension levers fanrimged end to end (118s posed at right angles to said main levers, "a,

at an an pivoted transverse. ever extendin operative gle'to saidextension levers, an

stresses from said members through said main levers through said extension levers to said transverse lever in lines substantially coinciding with the re ective intersectlons of the center planes 0 pivotal movement thereof.

22. In a scale, in combination, a girder chair, a mainlever and connecting means therebetween for transmitting load stresses; said means including spaced knife edge RIVA-Q ots and a suspension member cooperatlng with said chair and arrangedto transmit the stresses centrally of said p1vots.

23. In a scale, in combination, 'an end-er tension lever and avcenter extension lever, saidlevers being arranged end to end, a pivotal connection between said levers including an inverted U-shaped saddle having a centraLbearing on one of said levers and end hearings on the 'other of said levers.

24. In a scale, in combination, a pair of levers for transmittingload stresses from one to the-other, nose irons on the adjacent levers, and a bearing therebetween including an inverted U-shaped saddle co-actingcentrally with one of said nose irons and meeting at its ends with the other nose-iron.

25. In a scale, in combination, two levers for transmitting load stresses, a bearing therebe'tween including a saddle having transversely extending sup rting lugs, a hearing spool and a bearing block supported on 'eac-lnof said lugs, and a bearin spool and a bearing block disposed centra 1y of said saddle and on the opposite side thereof with res ect to said first mentioned bearing'spools an. bearing. blocks.

26. In a Scale, in combination, a pair of .levers'having pivotal bearings arranged in -dllferent horizontal planes, a lever disposed at an angle with respect to said first men tioned levers, and below said bearings and independent connections between said pair connections bemg supported by said bearings. i

27. In a scale, in combination, a pair of levers having overlapping ends, one above 'justablc connections with each of said means,

a transverse lever having spaced bearings and means connecting said spaced bearings and said element to transmit the load stress substantially in the line of intersection of the planes of movement ofsaid levers.

28. In a scale, in combination, a pair of extension levers having spaced ends overlapping in the plane of load transmission, a transverse lever, a yoke, spaced connecting means between one of said levers and said yoke, spaced connecting means between the other of said levers and said yoke embracing said first connecting means, and connecting means between said yoke and said transverse ever.

29. In a scale, in combination, a pair of extension levers having spaced overlapping ends, a transverse lever, a yoke, spaced connccting means between one of said levers and saidyoke, spaced connecting means between the other of said levers and said yoke embracing said first connecting means, and connecting means between said yoke and said transverse lever and embraced by both of said connecting means.

30. In a scale, in combination, a pair of overlapping extension levers, a transverse lever, bearing blocks pivotally engaging said extension levers, a yoke, transverscl spaced connecting means between one of said blocks and said yoke embracing one of said levers, transversely spaced connecting means between the other. of said blocks and said yoke.

embracing bctli of said levers, and connecting means between said yoke and saidtransverse lever:

31. In a scale, in combination, a plurality of spaced pairs of main levers, extension levers arranged end to end at right angles to said main levers and centrally a vethe latter, a transverse lever arranged at an angle to sald extension levers and centrally with respect thereto and to said main levers, and operative connections between said main levers and cooperating extension levers and between adjacent extension levers, and between said transverse lover and cooperating extension levers whereby the load is transmitted substantially in the center plane of movement of cach of said levers.

' In testimony whereof I hereunto sign my name.

MORTON STARR. 

